3 axis choose 2 axis

[sean1985]

i have a 3-dimensional array. each dimesnional represent an axis. how can choose either to plot a graoh.

[sean1985]

hi guys,

i have a 3 dimensional array. basically, they r in x, y and z array in order. previously, i have used to plot y and z array in an intensity graph. however now, i need x and z array to plot an intensity graph with z being control.

x=64 size

y=256 size

z=255 size

the output is 64 vs 255 graph

please help.

[StevenD]

Not entirely sure what you are trying to do, but if you index a 3 dimensional array at any single index, you will get a 2 dimensional array you can plug into an Intensity Chart. Maybe try something like this?

[sean1985]

thks steven . but i know about this.

what i need is given 3 d array. each dimensional is classify as x and y and z. and each of them contains a 2D which is capable plotting the intensity. now, we have to plot a graph with x vs z with a control over y.

my

3d array size

x=64

y=257

z=255 for ur own reference.. plss refernce to the earlier post for the code i did.

ty

[sean1985]

is the description not clear? pls voice out?

no one is replying

[Beaton]

It would help to have some example of your data.

I think you are trying to plot on an intensity graph, these x, y, and z values, but the x and y values are the coordinates for the z value.

Am I close?

[jpaul]

Hi Sean1985,

After looking though the example you provided as well as the forum posts, I was able to create a possible solution for your application (see attached VI). Just to clarify your issue, to make sure I have the right mindset, you have a 3D array and you want to access the X-Z values (while holding Y constant) to create an intensity graph from. If this is the case, the attached VI creates a subset of the 3D array by holding the Y value constant and then auto-indexing the array into a 1-D array and then back out to a 2-D array skipping the addition of the Y components. It is definitely hard to conceptualize, so free feel to play with the attached file and let me know if you have any questions.

Thanks!

Cheers,

Jonah
Applications Engineer
National Instruments 

[sean1985]

thanks

Jonah
Applications Engineer
National Instruments 

I have some enquiry regarding your array subset. by setting y length as 1. How could u fix it as constant? I dun really get it after

reading thru context help  and playing with the vi

Moreover, previously i hoped that i could have some control over the constant. However, i set some other values but it apppeared that output array has no changes. 

I hope i could get a 2D graph(X vs Z) at an adjustable constant(y).

thanks

[sean1985]

furthermore,

i would like to plot another graph with x vs y axis? how shall this be done?

please reply..

[sean1985]

Hi,

Basically to summarise my earlier posts, i dun quite understand how the vi. Could anyone explain it again? especially the array subset? how could intiialize length is 1 ? whats the meaning?

Next, i wanted to plot another graph using X vs Y only by the same 3 dimensional array?

pls reply...